{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:00.632182", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2023-Jun-12_to_2023-Jun-19_213.5_-15.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2023060001958}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "June 12 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 154297.91746542687}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["French Polynesia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Pacific Ocean", "Society Ridge"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -15.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 213.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "213.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 208.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 217.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-147.7, -17.62], [-148.0, -17.75], [-148.25, -17.65], [-148.5, -17.75], [-148.75, -17.65], [-149.0, -17.75], [-149.25, -17.65], [-149.5, -17.75], [-149.75, -17.65], [-150.0, -17.75], [-150.25, -17.65], [-150.5, -17.75], [-150.75, -17.65], [-151.0, -17.75], [-151.25, -17.65], [-151.5, -17.75], [-151.75, -17.65], [-152.0, -17.75], [-152.53, -17.53], [-152.75, -17.0], [-152.65, -16.75], [-152.75, -16.5], [-152.53, -15.97], [-152.18, -15.82], [-152.03, -15.47], [-151.5, -15.25], [-151.25, -15.35], [-151.0, -15.25], [-150.47, -15.47], [-150.32, -15.82], [-150.2, -15.87], [-150.03, -15.47], [-149.5, -15.25], [-149.25, -15.35], [-149.0, -15.25], [-148.75, -15.35], [-148.5, -15.25], [-148.25, -15.35], [-148.0, -15.25], [-147.75, -15.35], [-147.68, -15.32], [-147.53, -14.97], [-147.0, -14.75], [-146.75, -14.85], [-146.68, -14.82], [-146.53, -14.47], [-146.0, -14.25], [-145.75, -14.35], [-145.5, -14.25], [-145.25, -14.35], [-145.0, -14.25], [-144.5, -14.46], [-144.0, -14.25], [-143.47, -14.47], [-143.25, -15.0], [-143.37, -15.3], [-142.97, -15.47], [-142.82, -15.82], [-142.47, -15.97], [-142.25, -16.5], [-142.47, -17.03], [-143.0, -17.25], [-143.25, -17.15], [-143.5, -17.25], [-144.03, -17.03], [-144.18, -16.68], [-144.25, -16.65], [-144.5, -16.75], [-144.75, -16.65], [-144.82, -16.68], [-144.97, -17.03], [-145.5, -17.25], [-145.75, -17.15], [-145.87, -17.2], [-145.75, -17.5], [-145.97, -18.03], [-146.5, -18.25], [-146.75, -18.15], [-147.0, -18.25], [-147.53, -18.03], [-147.7, -17.62]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-152.75, -16.5], [-152.53, -15.97], [-152.18, -15.82], [-152.03, -15.47], [-151.5, -15.25], [-151.25, -15.35], [-151.0, -15.25], [-150.47, -15.47], [-150.32, -15.82], [-150.2, -15.87], [-150.03, -15.47], [-149.5, -15.25], [-149.25, -15.35], [-149.0, -15.25], [-148.75, -15.35], [-148.5, -15.25], [-148.25, -15.35], [-148.0, -15.25], [-147.75, -15.35], [-147.68, -15.32], [-147.53, -14.97], [-147.0, -14.75], [-146.75, -14.85], [-146.68, -14.82], [-146.53, -14.47], [-146.0, -14.25], [-145.75, -14.35], [-145.5, -14.25], [-145.25, -14.35], [-145.0, -14.25], [-144.5, -14.46], [-144.0, -14.25], [-143.47, -14.47], [-143.25, -15.0], [-143.37, -15.3], [-142.97, -15.47], [-142.82, -15.82], [-142.47, -15.97], [-142.25, -16.5], [-142.47, -17.03], [-143.0, -17.25], [-143.25, -17.15], [-143.5, -17.25], [-144.03, -17.03], [-144.18, -16.68], [-144.25, -16.65], [-144.5, -16.75], [-144.75, -16.65], [-144.82, -16.68], [-144.97, -17.03], [-145.5, -17.25], [-145.75, -17.15], [-146.0, -17.25], [-146.25, -17.15], [-146.32, -17.18], [-146.47, -17.53], [-147.0, -17.75], [-147.5, -17.54], [-148.0, -17.75], [-148.25, -17.65], [-148.5, -17.75], [-148.75, -17.65], [-149.0, -17.75], [-149.25, -17.65], [-149.5, -17.75], [-149.75, -17.65], [-150.0, -17.75], [-150.25, -17.65], [-150.5, -17.75], [-150.75, -17.65], [-151.0, -17.75], [-151.25, -17.65], [-151.5, -17.75], [-151.75, -17.65], [-152.0, -17.75], [-152.53, -17.53], [-152.75, -17.0], [-152.65, -16.75], [-152.75, -16.5]]]]}, "2023-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-152.75, -16.5], [-152.53, -15.97], [-152.18, -15.82], [-152.03, -15.47], [-151.5, -15.25], [-151.25, -15.35], [-151.0, -15.25], [-150.47, -15.47], [-150.32, -15.82], [-150.2, -15.87], [-150.03, -15.47], [-149.5, -15.25], [-149.25, -15.35], [-149.0, -15.25], [-148.75, -15.35], [-148.5, -15.25], [-148.25, -15.35], [-148.0, -15.25], [-147.75, -15.35], [-147.68, -15.32], [-147.53, -14.97], [-147.0, -14.75], [-146.75, -14.85], [-146.68, -14.82], [-146.53, -14.47], [-146.0, -14.25], [-145.75, -14.35], [-145.5, -14.25], [-145.25, -14.35], [-145.0, -14.25], [-144.5, -14.46], [-144.0, -14.25], [-143.47, -14.47], [-143.25, -15.0], [-143.37, -15.3], [-142.97, -15.47], [-142.82, -15.82], [-142.47, -15.97], [-142.25, -16.5], [-142.47, -17.03], [-143.0, -17.25], [-143.25, -17.15], [-143.5, -17.25], [-144.03, -17.03], [-144.18, -16.68], [-144.25, -16.65], [-144.5, -16.75], [-144.75, -16.65], [-144.82, -16.68], [-144.97, -17.03], [-145.5, -17.25], [-145.75, -17.15], [-145.87, -17.2], [-145.75, -17.5], [-145.97, -18.03], [-146.5, -18.25], [-146.75, -18.15], [-147.0, -18.25], [-147.53, -18.03], [-147.7, -17.62], [-148.0, -17.75], [-148.25, -17.65], [-148.5, -17.75], [-148.75, -17.65], [-149.0, -17.75], [-149.25, -17.65], [-149.5, -17.75], [-149.75, -17.65], [-150.0, -17.75], [-150.25, -17.65], [-150.5, -17.75], [-150.75, -17.65], [-151.0, -17.75], [-151.25, -17.65], [-151.5, -17.75], [-151.75, -17.65], [-152.0, -17.75], [-152.53, -17.53], [-152.75, -17.0], [-152.65, -16.75], [-152.75, -16.5]]]]}, "2023-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-152.75, -16.5], [-152.53, -15.97], [-152.18, -15.82], [-152.03, -15.47], [-151.5, -15.25], [-151.25, -15.35], [-151.0, -15.25], [-150.47, -15.47], [-150.32, -15.82], [-150.2, -15.87], [-150.03, -15.47], [-149.5, -15.25], [-149.25, -15.35], [-149.0, -15.25], [-148.75, -15.35], [-148.5, -15.25], [-148.25, -15.35], [-148.0, -15.25], [-147.75, -15.35], [-147.68, -15.32], [-147.53, -14.97], [-147.0, -14.75], [-146.75, -14.85], [-146.68, -14.82], [-146.53, -14.47], [-146.0, -14.25], [-145.75, -14.35], [-145.5, -14.25], [-145.25, -14.35], [-145.0, -14.25], [-144.5, -14.46], [-144.0, -14.25], [-143.47, -14.47], [-143.25, -15.0], [-143.37, -15.3], [-142.97, -15.47], [-142.82, -15.82], [-142.47, -15.97], [-142.25, -16.5], [-142.47, -17.03], [-143.0, -17.25], [-143.25, -17.15], [-143.5, -17.25], [-144.03, -17.03], [-144.18, -16.68], [-144.25, -16.65], [-144.5, -16.75], [-144.75, -16.65], [-144.82, -16.68], [-144.97, -17.03], [-145.5, -17.25], [-145.75, -17.15], [-145.87, -17.2], [-145.75, -17.5], [-145.97, -18.03], [-146.5, -18.25], [-146.75, -18.15], [-147.0, -18.25], [-147.53, -18.03], [-147.7, -17.62], [-148.0, -17.75], [-148.25, -17.65], [-148.5, -17.75], [-148.75, -17.65], [-149.0, -17.75], [-149.25, -17.65], [-149.5, -17.75], [-149.75, -17.65], [-150.0, -17.75], [-150.25, -17.65], [-150.5, -17.75], [-150.75, -17.65], [-151.0, -17.75], [-151.25, -17.65], [-151.5, -17.75], [-151.75, -17.65], [-152.0, -17.75], [-152.53, -17.53], [-152.75, -17.0], [-152.65, -16.75], [-152.75, -16.5]]]]}, "2023-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.53, -16.47], [-147.18, -16.32], [-147.03, -15.97], [-146.68, -15.82], [-146.53, -15.47], [-146.0, -15.25], [-145.75, -15.35], [-145.5, -15.25], [-144.97, -15.47], [-144.75, -16.0], [-144.85, -16.25], [-144.75, -16.5], [-144.97, -17.03], [-145.5, -17.25], [-145.75, -17.15], [-145.87, -17.2], [-145.75, -17.5], [-145.97, -18.03], [-146.5, -18.25], [-146.75, -18.15], [-147.0, -18.25], [-147.53, -18.03], [-147.75, -17.5], [-147.65, -17.25], [-147.75, -17.0], [-147.53, -16.47]]], [[[-144.03, -17.03], [-144.25, -16.5], [-144.03, -15.97], [-143.5, -15.75], [-143.25, -15.85], [-143.0, -15.75], [-142.47, -15.97], [-142.25, -16.5], [-142.47, -17.03], [-143.0, -17.25], [-143.25, -17.15], [-143.5, -17.25], [-144.03, -17.03]]]]}, "2023-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.53, -16.47], [-147.0, -16.25], [-146.47, -16.47], [-146.25, -17.0], [-146.35, -17.25], [-146.25, -17.5], [-146.47, -18.03], [-147.0, -18.25], [-147.53, -18.03], [-147.75, -17.5], [-147.65, -17.25], [-147.75, -17.0], [-147.53, -16.47]]], [[[-147.03, -16.03], [-147.25, -15.5], [-147.03, -14.97], [-146.5, -14.75], [-146.25, -14.85], [-146.0, -14.75], [-145.47, -14.97], [-145.25, -15.5], [-145.47, -16.03], [-146.0, -16.25], [-146.25, -16.15], [-146.5, -16.25], [-147.03, -16.03]]]]}, "2023-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.25, -15.5], [-147.03, -14.97], [-146.5, -14.75], [-146.25, -14.85], [-146.0, -14.75], [-145.47, -14.97], [-145.25, -15.5], [-145.47, -16.03], [-145.82, -16.18], [-145.97, -16.53], [-146.5, -16.75], [-147.03, -16.53], [-147.25, -16.0], [-147.15, -15.75], [-147.25, -15.5]]]]}, "2023-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.25, -15.5], [-147.03, -14.97], [-146.5, -14.75], [-146.25, -14.85], [-146.0, -14.75], [-145.47, -14.97], [-145.25, -15.5], [-145.47, -16.03], [-145.82, -16.18], [-145.97, -16.53], [-146.5, -16.75], [-147.03, -16.53], [-147.25, -16.0], [-147.15, -15.75], [-147.25, -15.5]]]]}, "2023-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-147.25, -15.5], [-147.03, -14.97], [-146.5, -14.75], [-145.97, -14.97], [-145.75, -15.5], [-145.85, -15.75], [-145.75, -16.0], [-145.97, -16.53], [-146.5, -16.75], [-147.03, -16.53], [-147.25, -16.0], [-147.15, -15.75], [-147.25, -15.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.4092031874735653}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.005152692263347}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.05035535195435, 27.069917655861616, 27.10663039676757, 26.855307659923767, 26.8279726848437, 26.94728226143542, 27.10137025511432, 26.932225959871744]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.287101074946804, 27.419246763443255, 27.413918308261998, 26.980755890138482, 27.028384081835952, 26.984198891947926, 27.259393108004133, 26.990429085698338]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.941036913662241, 1.008493618264363, 1.075103061046598, 1.014622793934916, 0.9107234969496147, 0.8942834229604651, 1.0665919333357767, 0.9181264175153387]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1450352736359264, 1.2658776879442826, 1.4092031874735653, 1.177530252874078, 0.9692506534763652, 0.91378862944714, 1.1904742725992037, 0.920249813502096]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4101522188447826, 1.5199199579278153, 1.6043841563446923, 1.4608476672193844, 1.3615465282664347, 1.3878161920252758, 1.6980287719107885, 1.522021528366838]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.820912927541192, 1.8678198077609907, 1.9431651335859323, 1.609247709279129, 1.440260089723834, 1.4057968377676802, 1.9259275241088485, 1.5541017459909392]}}